A design of optical fiber reflective memory card is presented in this article.All kinds of interfaces and data are controlled with FPGA

onboard SDRAM is used as data cache

signal transceiver integration is realized with bidirectional high speed optical module

low delay high speed real-time data transmission is realized with optical fiber network.Test on the board indicates that transmission rate is higher than 2.5Gbps

transmission delay lower than 400ns

and the transmission rate is stable and predictable.